# Found from: github user ivansafrin
#
# Find if a Python module is installed
# Found at http://www.cmake.org/pipermail/cmake/2011-January/041666.html
# To use do: find_python_module(PyQt4 REQUIRED)
function(find_python_module module)
        string(TOUPPER ${module} module_upper)  
        if(NOT PY_${module_upper})              
                   if(ARGC GREATER 1 AND ARGV1 STREQUAL "REQUIRED")
                        set(${module}_FIND_REQUIRED TRUE)               
                    endif()         
              # A module's location is usually a directory, but for binary modules            
              # it's a .so file.     
              execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"                     
                   "import re, ${module}; print(re.compile('/__init__.py.*').sub('',${module}.__file__))"                  
                   RESULT_VARIABLE _${module}_status                       
                   OUTPUT_VARIABLE _${module}_location                     
                   ERROR_QUIET                     
                   OUTPUT_STRIP_TRAILING_WHITESPACE)               

              if(NOT _${module}_status)    
                   set(PY_${module_upper} ${_${module}_location} CACHE STRING   
                        "Location of Python module ${module}")
              endif()    
        endif(NOT PY_${module_upper})
        find_package_handle_standard_args(PY_${module} DEFAULT_MSG PY_${module_upper})
endfunction(find_python_module) 
